Scatterplots Association and Line of Best Fit

Find the slope from the table.

• -4

• 1

• 4

• -2

Tags

CCSS.8.EE.B.5

What is a line of best fit used for?

• To make predictions

• To make the graph look pretty

• To connect the points

• To make it look like you know what you are doing

Tags

CCSS.8.EE.B.5

What type of association does this graph have?

• positive

• negative

• none

• all of the above

Which graph shows a line of best fit for the scatter plot?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

CCSS.8.EE.B.5

Which of the following could be a possible line of best fit for the data?

• y = -5/2x + 20

• y = -x + 19

• y = x + 20

• y = 2/3x + 15 

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month.  Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles? 

• 50 min

• 80 min

• 45 min

• 60 min

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

Tags

CCSS.HSF.BF.A.2

Which best describes the form of this scatterplot?

• linear

• nonlinear

• scattered

Tags

CCSS.8.F.A.3

how would you describe this association?

• positive linear strong

• positive linear weak

• positive linear moderate

• no association

Tags

CCSS.HSF-LE.A.1B